Of grand rapids



(No Model.)

J. B. RHODES'.

SAW GUMMER.

I 'UNITED STATES PATENT OFFICE.

JAMES B. RHODES, OF GRAND RAPIDS, MICHIGAN.

SAW-GUMMER.

SPECIFICATION forming part of `Letters Patent No. 502,319, dated August 1, 1893.

Application led April 8, 1892. Serial No. Ll28,393. (No model.)

To all whom t may concern:

Be it known that I, J AMES B. RHODES, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Saw-Gummers; and I do hereby declare the following to be a full, clear, and exact description of the invention,

such as will enable others skilled in the artV to which it appertains to make and use the same.

My invention relates to improvements in saw gurnmers, and its objectis to provide the same with certain new and useful features hereinafter more fully described, and particularly pointed out in the claims, reference being had to the accompanying drawings in which- Figure l is a front elevation of a device embodying my invention; Fig. 2 a side elevation of the same, with the lower part removed 5 and- Fig. 3 a plan View of the upper part of the same.

Like letters refer to like parts in all the figures.

A, A and A represent parts of a suitable frame work, to which the various parts of the machine are attached. A bar B having beveled sides and terminating in a handle B is pivoted to the leg Aoy a bolt B near thev end opposite the said handle, and supported near the other end bya pin B in the legA'. Said legs are provided with a series of holes in each whereby the bolt B,and the pin B' may be vertically adjusted to raise and lower the bar B, upon which bar is mounted the carriage C having a cup C provided with a central stud D upon which is abinding nut E, a collar F having a set screw F and acone C. Said cone centers the saw and forces the same against the face of the cup C by means of the nut E, as it is moved toward the cup. The collar F when secured by the screw F prevents turning the nutE back by the rotation of the cone as the saw is turned. This carriage traverses the bar B by means of a screw K turned by the crank K. G is another carriage adapted to be moved along the bar by hand and stopped in position by a set screw G. Upon this is a vertical flange I facing the edge of the saw upon which ange is secured a le J by means of the set screw H, for jointpivot.

ing the teeth of said saw. Upon the top of the frame are mounted the hangers O O in which is journaled acountershaft having the cone pulley P belted to the cone pulley P on the spindle S. Said shaft has also the tight and loose pulleys P for the driving belt of the machine; midway behind said counter shaft is a post O to the top of which is pivoted the yokejQ, by means of the set screwV Q which screw when tightened also secures said yoke in position. Said yoke is adapted to turn upon said pivot in a vertical plane and embraces the counter shaft, opposite the ends of which shaft are the pivots Q by which the frame Q is pivoted to` said yoke at the rear, whereby it turns on said pivots about an axis which at al1 times coincides with the axis of the counter shaft at the middle, and may be inclined thereto by turningthe yoke upon its The outer end of said frame Q is provided with journal boxes for the spindle S, which overhangs at one side of said frame and has attached the emery wheel R of suitable shape for grinding the teeth of the saw. Said frame is also provided with a handle X to manipulate the same, and has also a guard T over the emery wheel. This frame is counter balanced at its outer end by means of a weight M adj ustably secured to the pivoted bar L, to which bar opposite said Weight is attached the lower end of the rod N, the upper end of which rod engages and'supports the frame Q.

U is a post vertically adjustable by means of suitable nuts U which post engages said frame and stops its descent, toward the saw.

Vis an arm pivoted by a set screw to a hanger V outside the radius of the saw. The free end of said arm is swung in contact with the outer surface of the saw, and fixed in position by said set screw. Opposite to the end of said arm is an adjustable stud WV, which also comes into contact with the saw. This arm and stud serve to prevent vibration of the saw. i

The operation of my invention is as follows: By placing the saw upon the carriage C and properly adjusting the cone C to permit the saw to rotate about the same, and setting the file carriage G so that the surface of the tile will be near the ends of the teeth, the saw may be jointed by rotating the same and IOO moving it slowly toward the iile by turning the screw K. It is evidently not material which of said carriages'is moved by the screw K,

Y for this operation. By providing a separately adjustable stud NY and arm V, I am able to adapt them to any thickness, or gage of saw. By means of the frame Q', pivoted to the yoke O, opposite the endsY of the shaft, and pivoting the yoke in the middle, I am able to incline the'spindle', or arbor to the horizontal plane, and also raise and lower it in the arc of a circle about the counter shaft, Without pivoting the frame Q on the counter shaft, which is objectionable, on account of friction and Wear.

What I claim is l. In combination with a saw gum mer havsaid bar, having a ango and binding screw Y to hold a file against the ends of the teeth of said saw, substantially as described.l

3. In a saw gummer, in combination Witha counter shaft, and a spindle having an emery wheel attached, and pulleys and belts to op 35 per-ate the same; a yoke pivoted near its middle, and having` arms embracing, and disconnected from the counter shaft and a frame having bearings forsaid spindle,and pivoted to the respective arms of said yoke opposite 4o the respective ends of said counter shaft, substantially as described.

4. In a saW gummer, the combination ot' an adjustable bar, a'movable saw carriage on said bar, a screw engaging and moving said saw-45V carriage, and an adjustable file carriage on said bar, an emery Wheel, a spindle, a counter shaft and pulleys and belts to operate the same, and a frame having said spindle journaled therein, and a yoke pivoted to said 5c frame opposite the ends of said counter-shaft, and turning on a pivot near its middle, substantially as described. j

In testimony whereof I aix my signature in presence of two Witnesses.

- JAMES B. RHODES.

Vitnesses: A

LUTHER V. MoULToN, Los MoULToN. 

